/*
   Copyright (C) 2007 - 2015 by Mark de Wever <koraq@xs4all.nl>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/

#define GETTEXT_DOMAIN "wesnoth-lib"

#include "gui/auxiliary/widget_definition/slider.hpp"

#include "gui/auxiliary/log.hpp"
#include "wml_exception.hpp"

namespace gui2
{

tslider_definition::tslider_definition(const config& cfg)
	: tcontrol_definition(cfg)
{
	DBG_GUI_P << "Parsing slider " << id << '\n';

	load_resolutions<tresolution>(cfg);
}

/*WIKI
 * @page = GUIWidgetDefinitionWML
 * @order = 1_slider
 *
 * == Slider ==
 *
 * @macro = slider_description
 *
 * @begin{parent}{name="gui/"}
 * @begin{tag}{name="slider_definition"}{min=0}{max=-1}{super="generic/widget_definition"}
 * @begin{tag}{name="resolution"}{min=0}{max=-1}{super="generic/widget_definition/resolution"}
 * @begin{table}{config}
 *     minimum_positioner_length & unsigned & &
 *                                     The minimum size the positioner is
 *                                     allowed to be. The engine needs to know
 *                                     this in order to calculate the best size
 *                                     for the positioner. $
 *     maximum_positioner_length & unsigned & 0 &
 *                                     The maximum size the positioner is
 *                                     allowed to be. If minimum and maximum are
 *                                     the same value the positioner is fixed
 *                                     size. If the maximum is 0 (and the
 *                                     minimum not) there's no maximum. $
 *     left_offset & unsigned & 0 &    The number of pixels at the left side
 *                                     which can't be used by the positioner. $
 *     right_offset & unsigned & 0 &   The number of pixels at the right side
 *                                     which can't be used by the positioner. $
 * @end{table}
 *
 * The following states exist:
 * * state_enabled, the slider is enabled.
 * * state_disabled, the slider is disabled.
 * * state_pressed, the left mouse button is down on the positioner of the
 *   slider.
 * * state_focussed, the mouse is over the positioner of the slider.
 * @begin{tag}{name="state_enabled"}{min=0}{max=1}{super="generic/state"}
 * @end{tag}{name="state_enabled"}
 * @begin{tag}{name="state_disabled"}{min=0}{max=1}{super="generic/state"}
 * @end{tag}{name="state_disabled"}
 * @begin{tag}{name="state_pressed"}{min=0}{max=1}{super="generic/state"}
 * @end{tag}{name="state_pressed"}
 * @begin{tag}{name="state_focussed"}{min=0}{max=1}{super="generic/state"}
 * @end{tag}{name="state_focussed"}
 * @end{tag}{name="resolution"}
 * @end{tag}{name="slider_definition"}
 * @end{parent}{name="gui/"}
 */
tslider_definition::tresolution::tresolution(const config& cfg)
	: tresolution_definition_(cfg)
	, minimum_positioner_length(cfg["minimum_positioner_length"])
	, maximum_positioner_length(cfg["maximum_positioner_length"])
	, left_offset(cfg["left_offset"])
	, right_offset(cfg["right_offset"])
{
	VALIDATE(minimum_positioner_length,
			 missing_mandatory_wml_key("resolution",
									   "minimum_positioner_length"));

	// Note the order should be the same as the enum tstate is slider.hpp.
	state.push_back(tstate_definition(cfg.child("state_enabled")));
	state.push_back(tstate_definition(cfg.child("state_disabled")));
	state.push_back(tstate_definition(cfg.child("state_pressed")));
	state.push_back(tstate_definition(cfg.child("state_focussed")));
}

} // namespace gui2